EP1418790A3 - Subscriber line interface circuit - Google Patents

Subscriber line interface circuit Download PDF

Info

Publication number
EP1418790A3
EP1418790A3 EP03104125A EP03104125A EP1418790A3 EP 1418790 A3 EP1418790 A3 EP 1418790A3 EP 03104125 A EP03104125 A EP 03104125A EP 03104125 A EP03104125 A EP 03104125A EP 1418790 A3 EP1418790 A3 EP 1418790A3
Authority
EP
European Patent Office
Prior art keywords
interface circuit
subscriber line
line interface
frequencies
kohms
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03104125A
Other languages
German (de)
French (fr)
Other versions
EP1418790A2 (en
Inventor
Raman Sargis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Texas Instruments Inc
Original Assignee
Texas Instruments Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Texas Instruments Inc filed Critical Texas Instruments Inc
Publication of EP1418790A2 publication Critical patent/EP1418790A2/en
Publication of EP1418790A3 publication Critical patent/EP1418790A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H04Q11/0421—Circuit arrangements therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13039—Asymmetrical two-way transmission, e.g. ADSL, HDSL
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1319—Amplifier, attenuation circuit, echo suppressor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13191—Repeater
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13202—Network termination [NT]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13302—Magnetic elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13305—Transistors, semiconductors in general
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13306—Ferro-electric elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1332—Logic circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13322—Integrated circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Telephonic Communication Services (AREA)
  • Filters And Equalizers (AREA)
  • Communication Control (AREA)

Abstract

A subscriber line interface circuit 106 is provided that has an output impedance that may be greater than about 2.2 Kohms at at least some frequencies associated with ADSL communications. In at least some embodiments, such ADSL frequencies include frequencies greater than about 30 KHz. In some embodiments, the subscriber line interface circuit 106 includes an output driver 120 that provides voice signals on a telephone line on which digital data is also provided by a data driver, and a filter 122 coupled to the output driver 120 wherein the output impedance of the subscriber line interface circuit 106 is greater than about 2.2 Kohms at at least some frequencies greater than 30 KHz.
EP03104125A 2002-11-07 2003-11-07 Subscriber line interface circuit Withdrawn EP1418790A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US42443702P 2002-11-07 2002-11-07
US424437P 2002-11-07
US427770 2003-04-03
US10/427,770 US7006626B2 (en) 2002-11-07 2003-04-30 Subscriber interface circuit

Publications (2)

Publication Number Publication Date
EP1418790A2 EP1418790A2 (en) 2004-05-12
EP1418790A3 true EP1418790A3 (en) 2008-01-23

Family

ID=32110367

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03104125A Withdrawn EP1418790A3 (en) 2002-11-07 2003-11-07 Subscriber line interface circuit

Country Status (3)

Country Link
US (1) US7006626B2 (en)
EP (1) EP1418790A3 (en)
JP (1) JP2004159340A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE532343T1 (en) * 2006-09-08 2011-11-15 Alcatel Lucent FILTERING DEVICE FOR TRANSMITTING TELEPHONE SIGNALS
US9712341B2 (en) * 2009-01-16 2017-07-18 Tekelec, Inc. Methods, systems, and computer readable media for providing E.164 number mapping (ENUM) translation at a bearer independent call control (BICC) and/or session intiation protocol (SIP) router

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5856758A (en) * 1996-11-20 1999-01-05 Adtran, Inc. Low distortion driver employing positive feedback for reducing power loss in output impedance that effectively matches the impedance of driven line
WO2002025814A1 (en) * 2000-09-25 2002-03-28 Tioga Technologies Inc. Line driver with output impedance synthesis
US20020070801A1 (en) * 2000-09-15 2002-06-13 Infineon Technologies Ag Differential line driver circuit
DE10049331C1 (en) * 2000-10-05 2002-06-13 Infineon Technologies Ag Broadband driver for subscriber interface circuit has 2 broadband driver circuits for driving signals in 2 different frequency ranges

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6002684A (en) * 1997-07-14 1999-12-14 Conexant Systems, Inc. Method and system for achieving faster asymmetric data transmission through the public switched telephone network
US6285672B1 (en) * 1997-09-16 2001-09-04 Rockwell Semiconductor Systems, Inc. Method and system for achieving improved data transmission through the public switched telephone network
US6483904B1 (en) * 1998-04-27 2002-11-19 3Com Corporation Method and system for high-speed interface access to a computer network using a subscriber telephone line

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5856758A (en) * 1996-11-20 1999-01-05 Adtran, Inc. Low distortion driver employing positive feedback for reducing power loss in output impedance that effectively matches the impedance of driven line
US20020070801A1 (en) * 2000-09-15 2002-06-13 Infineon Technologies Ag Differential line driver circuit
WO2002025814A1 (en) * 2000-09-25 2002-03-28 Tioga Technologies Inc. Line driver with output impedance synthesis
DE10049331C1 (en) * 2000-10-05 2002-06-13 Infineon Technologies Ag Broadband driver for subscriber interface circuit has 2 broadband driver circuits for driving signals in 2 different frequency ranges

Also Published As

Publication number Publication date
EP1418790A2 (en) 2004-05-12
JP2004159340A (en) 2004-06-03
US7006626B2 (en) 2006-02-28
US20040091098A1 (en) 2004-05-13

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